/// <summary>
/// 生成signature文件
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void SC_CreateSampleFiles_ItemClick(object sender, DevExpress.XtraBars.ItemClickEventArgs e)
{
if (SC_dataGridView.Rows.Count == 0)
{
return;
}
SaveFileDialog SaveSignatureFile = new SaveFileDialog();
SaveSignatureFile.Title = "生成Signature文件";
SaveSignatureFile.Filter = "样本文件|*.gsg";
if (SaveSignatureFile.ShowDialog() == DialogResult.OK)
{
IGeoDataset inputraster = SampleLayerCombox.Tag as IGeoDataset;
//在临时文件夹生成featureclass，根据featureclass生成signature文件
//判断临时文件夹下是否有重名
int changefilename = 0;
while (System.IO.File.Exists(Application.StartupPath + "\\temp\\TempSample" + changefilename + ".shp"))
{
changefilename++;
}
//新建featureclass字段
IFields pFields = new FieldsClass();
IFieldsEdit pFieldsEdit = pFields as IFieldsEdit;
IField pField = new FieldClass();
IFieldEdit pFieldEdit = pField as IFieldEdit;
pFieldEdit.Name_2 = "Shape";
pFieldEdit.Type_2 = esriFieldType.esriFieldTypeGeometry;
//设置geometry definition
IGeometryDef pGeometryDef = new GeometryDefClass();
IGeometryDefEdit pGeometryDefEdit = pGeometryDef as IGeometryDefEdit;
pGeometryDefEdit.GeometryType_2 = ESRI.ArcGIS.Geometry.esriGeometryType.esriGeometryPolygon;
pGeometryDefEdit.SpatialReference_2 = inputraster.SpatialReference;
pFieldEdit.GeometryDef_2 = pGeometryDef;
pFieldsEdit.AddField(pField);
IWorkspaceFactory pWorkspaceFactory = new ShapefileWorkspaceFactory();
IFeatureWorkspace pFeatureWorkspace = pWorkspaceFactory.OpenFromFile(Application.StartupPath + "\\temp", 0) as IFeatureWorkspace;
IFeatureClass featureclass = pFeatureWorkspace.CreateFeatureClass("TempSample" + changefilename + ".shp", pFields, null, null, esriFeatureType.esriFTSimple, "Shape", "");
//根据单元格tag中存储的多边形生成对应要素
for (int i = 0; i < SC_dataGridView.Rows.Count; i++)
{
IFeature feature = featureclass.CreateFeature();
feature.Shape = SC_dataGridView.Rows[i].Cells["color"].Tag as IPolygon;
feature.Store();
}
//生成signature文件
IGeoDataset Sampledataset = featureclass as IGeoDataset;
IMultivariateOp Multivariateop = new RasterMultivariateOpClass();
Multivariateop.CreateSignatures(inputraster, Sampledataset, SaveSignatureFile.FileName + ".gsg", true);
}
}
